<!--考生答题界面-->
<template>
  <div id="answer">
    <!--顶部信息栏-->
    <div class="top">
      <ul class="item">
        <li><i class="iconfont icon-menufold icon20" ref="toggle" @click="slider_flag = !slider_flag"></i></li>
        <li>{{ examData.type }}-{{ examData.source }}</li>
        <li @click="flag = !flag">
          <i class="iconfont icon-user icon20"></i>
          <div class="msg" v-if="flag" @click="flag = !flag">
            <p>姓名：{{ userInfo.name }}</p>
            <p>准考证号: {{ userInfo.id }}</p>
          </div>
        </li>
        <li><i class="iconfont icon-arrLeft icon20"></i></li>
      </ul>
    </div>
    <div class="flexarea">
      <!--左边题目编号区-->
      <transition name="slider-fade">
        <div class="left" v-if="slider_flag">
          <ul class="l-top">
            <li>
              <a href="javascript:;"></a>
              <span>当前</span>
            </li>
            <li>
              <a href="javascript:;"></a>
              <span>未答</span>
            </li>
            <li>
              <a href="javascript:;"></a>
              <span>已答</span>
            </li>
            <li>
              <a href="javascript:;"></a>
              <span>标记</span>
            </li>
          </ul>
          <div class="l-bottom">
            <div class="item">
              <p>选择题部分</p>
              <ul>
                <li v-for="(list, index1) in topic[1]" :key="index1">
                  <a href="javascript:;"
                     @click="change(index1)"
                     :class="{'border': index == index1 && currentType == 1,'bg': bg_flag && topic[1][index1].isClick == true}">
                    <span :class="{'mark': topic[1][index1].isMark == true}"></span>
                    {{ index1 + 1 }}
                  </a>
                </li>
              </ul>
            </div>
            <div class="item">
              <p>填空题部分</p>
              <ul>
                <li v-for="(list, index2) in topic[2]" :key="index2">
                  <a href="javascript:;" @click="fill(index2)"
                     :class="{'border': index == index2 && currentType == 2,'bg': fillAnswer[index2][3] == true}"><span
                    :class="{'mark': topic[2][index2].isMark == true}"></span>{{ topicCount[0] + index2 + 1 }}</a>
                </li>
              </ul>
            </div>
            <div class="item">
              <p>判断题部分</p>
              <ul>
                <li v-for="(list, index3) in topic[3]" :key="index3">
                  <a href="javascript:;" @click="judge(index3)"
                     :class="{'border': index == index3 && currentType == 3,'bg': bg_flag && topic[3][index3].isClick == true}"><span
                    :class="{'mark': topic[3][index3].isMark == true}"></span>{{ topicCount[0] + topicCount[1] + index3 + 1 }}</a>
                </li>
              </ul>
            </div>
            <div class="final" @click="commit()">结束考试</div>
          </div>
        </div>
      </transition>
      <!--右边选择答题区-->
      <transition name="slider-fade">
        <div class="right">
          <div class="title">
            <p>{{ title }}</p>
            <i class="iconfont icon-right auto-right"></i>
            <span>全卷共{{ topicCount[0] + topicCount[1] + topicCount[2] }}题  <i class="iconfont icon-time"></i>倒计时：<b>{{ time }}</b>分钟</span>
          </div>
          <div class="content">
            <p class="topic"><span class="number">{{ number }}</span>{{ showQuestion }}</p>
            <div v-if="currentType == 1">
              <el-radio-group v-model="radio[index]" @change="getChangeLabel">
                <el-radio :label="1">{{ showAnswer.answerA }}</el-radio>
                <el-radio :label="2">{{ showAnswer.answerB }}</el-radio>
                <el-radio :label="3">{{ showAnswer.answerC }}</el-radio>
                <el-radio :label="4">{{ showAnswer.answerD }}</el-radio>
              </el-radio-group>
              <div class="analysis" v-if="isPractice">
                <ul>
                  <li>
                    <el-tag type="success">正确姿势：</el-tag>
                    <span class="right">{{ reduceAnswer.rightAnswer }}</span></li>
                  <li>
                    <el-tag>题目解析：</el-tag>
                  </li>
                  <li>{{ reduceAnswer.analysis == null ? '暂无解析' : reduceAnswer.analysis }}</li>
                </ul>
              </div>
            </div>
            <div class="fill" v-if="currentType == 2">
              <div v-for="(item,currentIndex) in part" :key="currentIndex">
                <el-input placeholder="请填在此处"
                          v-model="fillAnswer[index][currentIndex]"
                          clearable
                          @blur="fillBG">
                </el-input>
              </div>
              <div class="analysis" v-if="isPractice">
                <ul>
                  <li>
                    <el-tag type="success">正确姿势：</el-tag>
                    <span class="right">{{ topic[2][index].answer }}</span></li>
                  <li>
                    <el-tag>题目解析：</el-tag>
                  </li>
                  <li>{{ topic[2][index].analysis == null ? '暂无解析' : topic[2][index].analysis }}</li>
                </ul>
              </div>
            </div>
            <div class="judge" v-if="currentType == 3">
              <el-radio-group v-model="judgeAnswer[index]" @change="getJudgeLabel" v-if="currentType == 3">
                <el-radio :label="1">正确</el-radio>
                <el-radio :label="2">错误</el-radio>
              </el-radio-group>
              <div class="analysis" v-if="isPractice">
                <ul>
                  <li>
                    <el-tag type="success">正确姿势：</el-tag>
                    <span class="right">{{ topic[3][index].answer }}</span></li>
                  <li>
                    <el-tag>题目解析：</el-tag>
                  </li>
                  <li>{{ topic[3][index].analysis == null ? '暂无解析' : topic[3][index].analysis }}</li>
                </ul>
              </div>
            </div>
          </div>
          <div class="operation">
            <ul class="end">
              <li @click="previous()"><i class="iconfont icon-previous"></i><span>上一题</span></li>
              <li @click="mark()"><i class="iconfont icon-mark-o"></i><span>标记</span></li>
              <li @click="next()"><span>下一题</span><i class="iconfont icon-next"></i></li>
            </ul>
          </div>
        </div>
      </transition>
    </div>
  </div>
</template>

<script>
import {mapState} from 'vuex';

export default {
  data() {
    return {
      startTime: null, //考试开始·时间
      endTime: null, //考试结束时间
      time: null, //考试持续时间
      reduceAnswer: [],  //vue官方不支持3层以上数据嵌套,如嵌套则会数据渲染出现问题,此变量直接接收3层嵌套时的数据。
      answerScore: 0, //答题总分数
      bg_flag: false, //已答标识符,已答改变背景色
      isFillClick: false, //选择题是否点击标识符
      slider_flag: true, //左侧显示隐藏标识符
      flag: false, //个人信息显示隐藏标识符
      currentType: 1, //当前题型类型  1--选择题  2--填空题  3--判断题
      radio: [], //保存考生所有选择题的选项
      title: '请选择正确的选项',
      index: 0, //全局index
      userInfo: { //用户信息
        name: null,
        id: null
      },
      topicCount: [],//每种类型题目的总数
      score: [],  //每种类型分数的总数
      examData: { //考试信息
        // source: null,
        // totalScore: null,
      },
      topic: {  //试卷信息

      },
      showQuestion: [], //当前显示题目信息
      showAnswer: {}, //当前题目对应的答案选项
      number: 1, //题号
      part: null, //填空题的空格数量
      fillAnswer: [[]], //二维数组保存所有填空题答案
      judgeAnswer: [], //保存所有判断题答案
      topic1Answer: [],  //学生选择题作答编号,
      rightAnswer: ''
    };
  },
  created() {
    this.getCookies();
    this.getExamData();
    this.showTime();
  },
  methods: {
    getTime(date) { //日期格式化
      let year = date.getFullYear();
      let month = date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1;
      let day = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
      let hours = date.getHours() < 10 ? '0' + date.getHours() : date.getHours();
      let minutes = date.getMinutes() < 10 ? '0' + date.getMinutes() : date.getMinutes();
      let seconds = date.getSeconds() < 10 ? '0' + date.getSeconds() : date.getSeconds();
      // 拼接
      return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
    },
    getCookies() {  //获取cookie
      this.userInfo.name = this.$cookies.get('cname');
      this.userInfo.id = this.$cookies.get('cid');
    },
    calcuScore() { //计算答题分数

    },
    getExamData() { //获取当前试卷所有信息
      let date = new Date();
      this.startTime = this.getTime(date);
      let examCode = this.$route.query.examCode; //获取路由传递过来的试卷编号
      this.$axios(`/api/exam/${examCode}`).then(res => {  //通过examCode请求试卷详细信息
        this.examData = {...res.data.data}; //获取考试详情
        this.index = 0;
        this.time = this.examData.totalScore; //获取分钟数
        let paperId = this.examData.paperId;
        this.$axios(`/api/paper/${paperId}`).then(res => {  //通过paperId获取试题题目信息
          this.topic = {...res.data};
          let reduceAnswer = this.topic[1][this.index];
          this.reduceAnswer = reduceAnswer;
          let keys = Object.keys(this.topic); //对象转数组
          keys.forEach(e => {
            let data = this.topic[e];
            this.topicCount.push(data.length);
            let currentScore = 0;
            for (let i = 0; i < data.length; i++) { //循环每种题型,计算出总分
              currentScore += data[i].score;
            }
            this.score.push(currentScore); //把每种题型总分存入score
          });
          let len = this.topicCount[1];
          let father = [];
          for (let i = 0; i < len; i++) { //根据填空题数量创建二维空数组存放每道题答案
            let children = [null, null, null, null];
            father.push(children);
          }
          this.fillAnswer = father;
          let dataInit = this.topic[1];
          this.number = 1;
          this.showQuestion = dataInit[0].question;
          this.showAnswer = dataInit[0];
        });
      });
    },
    change(index) { //选择题
      this.index = index;
      let reduceAnswer = this.topic[1][this.index];
      this.reduceAnswer = reduceAnswer;
      this.isFillClick = true;
      this.currentType = 1;
      let len = this.topic[1].length;
      if (this.index < len) {
        if (this.index <= 0) {
          this.index = 0;
        }
        console.log(`总长度${len}`);
        console.log(`当前index:${index}`);
        this.title = '请选择正确的选项';
        let Data = this.topic[1];
        // console.log(Data)
        this.showQuestion = Data[this.index].question; //获取题目信息
        this.showAnswer = Data[this.index];
        this.number = this.index + 1;
      } else if (this.index >= len) {
        this.index = 0;
        this.fill(this.index);
      }
    },
    fillBG() { //填空题已答题目 如果已答该题目,设置第四个元素为true为标识符
      if (this.fillAnswer[this.index][0] != null) {
        this.fillAnswer[this.index][3] = true;
      }
    },
    fill(index) { //填空题
      let len = this.topic[2].length;
      this.currentType = 2;
      this.index = index;
      if (index < len) {
        if (index < 0) {
          index = this.topic[1].length - 1;
          this.change(index);
        } else {
          console.log(`总长度${len}`);
          console.log(`当前index:${index}`);
          this.title = '请在横线处填写答案';
          let Data = this.topic[2];
          console.log(Data);
          this.showQuestion = Data[index].question; //获取题目信息
          let part = this.showQuestion.split('()').length - 1; //根据题目中括号的数量确定填空横线数量
          this.part = part;
          this.number = this.topicCount[0] + index + 1;
        }
      } else if (index >= len) {
        this.index = 0;
        this.judge(this.index);
      }
    },
    judge(index) { //判断题
      let len = this.topic[3].length;
      this.currentType = 3;
      this.index = index;
      if (this.index < len) {
        if (this.index < 0) {
          this.index = this.topic[2].length - 1;
          this.fill(this.index);
        } else {
          console.log(`总长度${len}`);
          console.log(`当前index:${this.index}`);
          this.title = '请作出正确判断';
          let Data = this.topic[3];
          console.log(Data);
          this.showQuestion = Data[index].question; //获取题目信息
          this.number = this.topicCount[0] + this.topicCount[1] + index + 1;
        }
      } else if (this.index >= len) {
        this.index = 0;
        this.change(this.index);
      }
    },
    getChangeLabel(val) { //获取选择题作答选项
      this.radio[this.index] = val; //当前选择的序号
      if (val) {
        let data = this.topic[1];
        this.bg_flag = true;
        data[this.index]['isClick'] = true;
      }
      /* 保存学生答题选项 */
      this.topic1Answer[this.index] = val;
    },
    getJudgeLabel(val) {  //获取判断题作答选项
      this.judgeAnswer[this.index] = val;
      if (val) {
        let data = this.topic[3];
        this.bg_flag = true;
        data[this.index]['isClick'] = true;
      }
    },
    previous() { //上一题
      this.index--;
      switch (this.currentType) {
        case 1:
          this.change(this.index);
          break;
        case 2:
          this.fill(this.index);
          break;
        case 3:
          this.judge(this.index);
          break;
      }
    },
    next() { //下一题
      this.index++;
      switch (this.currentType) {
        case 1:
          this.change(this.index);
          break;
        case 2:
          this.fill(this.index);
          break;
        case 3:
          this.judge(this.index);
          break;
      }
    },
    mark() { //标记功能
      switch (this.currentType) {
        case 1:
          this.topic[1][this.index]['isMark'] = true; //选择题标记
          break;
        case 2:
          this.topic[2][this.index]['isMark'] = true; //填空题标记
          break;
        case 3:
          this.topic[3][this.index]['isMark'] = true; //判断题标记
      }
    },
    commit() { //答案提交计算分数
      /* 计算选择题总分 */
      let topic1Answer = this.topic1Answer;
      let finalScore = 0;
      topic1Answer.forEach((element, index) => { //循环每道选择题根据选项计算分数
        let right = null;
        if (element != null) {
          switch (element) { //选项1,2,3,4 转换为 "A","B","C","D"
            case 1:
              right = 'A';
              break;
            case 2:
              right = 'B';
              break;
            case 3:
              right = 'C';
              break;
            case 4:
              right = 'D';
          }
          if (right == this.topic[1][index].rightAnswer) { // 当前选项与正确答案对比
            finalScore += this.topic[1][index].score; // 计算总分数
          }
          console.log(right, this.topic[1][index].rightAnswer);
        }
        // console.log(topic1Answer)
      });
      /**计算判断题总分 */
        // console.log(`this.fillAnswer${this.fillAnswer}`)
        // console.log(this.topic[2][this.index])
      let fillAnswer = this.fillAnswer;
      fillAnswer.forEach((element, index) => { //此处index和 this.index数据不一致，注意
        element.forEach((inner) => {
          if (this.topic[2][index].answer.includes(inner)) { //判断填空答案是否与数据库一致
            console.log('正确');
            finalScore += this.topic[2][this.index].score;
          }
        });
      });
      /** 计算判断题总分 */
      let topic3Answer = this.judgeAnswer;
      topic3Answer.forEach((element, index) => {
        let right = null;
        switch (element) {
          case 1:
            right = 'T';
            break;
          case 2:
            right = 'F';
        }
        if (right == this.topic[3][index].answer) { // 当前选项与正确答案对比
          finalScore += this.topic[3][index].score; // 计算总分数
        }
      });
      console.log(`目前总分${finalScore}`);
      if (this.time != 0) {
        this.$confirm('考试结束时间未到,是否提前交卷', '友情提示', {
          confirmButtonText: '立即交卷',
          cancelButtonText: '再检查一下',
          type: 'warning'
        }).then(() => {
          console.log('交卷');
          let date = new Date();
          this.endTime = this.getTime(date);
          let answerDate = this.endTime.substr(0, 10);
          //提交成绩信息
          this.$axios({
            url: '/api/score',
            method: 'post',
            data: {
              examCode: this.examData.examCode, //考试编号
              studentId: this.userInfo.id, //学号
              subject: this.examData.source, //课程名称
              etScore: finalScore, //答题成绩
              answerDate: answerDate //答题日期
            }
          }).then(res => {
            if (res.data.code == 200) {
              this.$router.push({
                path: '/studentScore', query: {
                  score: finalScore,
                  startTime: this.startTime,
                  endTime: this.endTime
                }
              });
            }
          });
        }).catch(() => {
          console.log('继续答题');
        });
      }
    },
    showTime() { //倒计时
      setInterval(() => {
        this.time -= 1;
        if (this.time == 10) {
          this.$message({
            showClose: true,
            type: 'error',
            message: '考生注意,考试时间还剩10分钟！！！'
          });
          if (this.time == 0) {
            console.log('考试时间已到,强制交卷。');
          }
        }
      }, 1000 * 60);
    }
  },
  computed: mapState(['isPractice'])
};
</script>

<style lang="less">
.iconfont.icon-time {
  color: #2776df;
  margin: 0px 6px 0px 20px;
}

.analysis {
  margin-top: 20px;

  .right {
    color: #2776df;
    font-size: 18px;
    border: 1px solid #2776df;
    padding: 0px 6px;
    border-radius: 4px;
    margin-left: 20px;
  }

  ul li:nth-child(2) {
    margin: 20px 0px;
  }

  ul li:nth-child(3) {
    padding: 10px;
    background-color: #d3c6c9;
    border-radius: 4px;
  }
}

.analysis span:nth-child(1) {
  font-size: 18px;
}

.mark {
  position: absolute;
  width: 4px;
  height: 4px;
  content: "";
  background-color: red;
  border-radius: 50%;
  top: 0px;
  left: 22px;
}

.border {
  position: relative;
  border: 1px solid #FF90AA !important;
}

.bg {
  background-color: #5188b8 !important;
}

.fill .el-input {
  display: inline-flex;
  width: 150px;
  margin-left: 20px;

  .el-input__inner {
    border: 1px solid transparent;
    border-bottom: 1px solid #eee;
    padding-left: 20px;
  }
}

/* slider过渡效果 */
.slider-fade-enter-active {
  transition: all .3s ease;
}

.slider-fade-leave-active {
  transition: all .3s cubic-bezier(1.0, 0.5, 0.8, 1.0);
}

.slider-fade-enter, .slider-fade-leave-to {
  transform: translateX(-100px);
  opacity: 0;
}

.operation .end li:nth-child(2) {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: rgb(39, 118, 223);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  color: #fff;
}

.operation .end li {
  cursor: pointer;
  margin: 0 100px;
}

.operation {
  background-color: #fff;
  border-radius: 4px;
  padding: 10px 0px;
  margin-right: 10px;
}

.operation .end {
  display: flex;
  justify-content: center;
  align-items: center;
  color: rgb(39, 118, 223);
}

.content .number {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 20px;
  height: 20px;
  background-color: rgb(39, 118, 223);
  border-radius: 4px;
  margin-right: 4px;
}

.content {
  padding: 0px 20px;
}

.content .topic {
  padding: 20px 0px;
  padding-top: 30px;
}

.right .content {
  background-color: #fff;
  margin: 10px;
  margin-left: 0px;
  height: 470px;
}

.content .el-radio-group label {
  color: #000;
  margin: 5px 0px;
}

.content .el-radio-group {
  display: flex;
  flex-direction: column;
}

.right .title p {
  margin-left: 20px;
}

.flexarea {
  display: flex;
}

.flexarea .right {
  flex: 1;
}

.auto-right {
  margin-left: auto;
  color: #2776df;
  margin-right: 10px;
}

.right .title {
  margin-right: 10px;
  padding-right: 30px;
  display: flex;
  margin-top: 10px;
  background-color: #fff;
  height: 50px;
  line-height: 50px;
}

.clearfix {
  clear: both;
}

.l-bottom .final {
  cursor: pointer;
  display: inline-block;
  text-align: center;
  background-color: rgb(39, 118, 223);
  width: 240px;
  margin: 20px 0px 20px 10px;
  border-radius: 4px;
  height: 30px;
  line-height: 30px;
  color: #fff;
  margin-top: 22px;
}

#answer .left .item {
  padding: 0px;
  font-size: 16px;
}

.l-bottom {
  border-radius: 4px;
  background-color: #fff;
}

.l-bottom .item p {
  margin-bottom: 15px;
  margin-top: 10px;
  color: #000;
  margin-left: 10px;
  letter-spacing: 2px;
}

.l-bottom .item li {
  width: 15%;
  margin-left: 5px;
  margin-bottom: 10px;
}

.l-bottom .item {
  display: flex;
  flex-direction: column;
}

.l-bottom .item ul {
  width: 100%;
  margin-bottom: -8px;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}

.l-bottom .item ul li a {
  position: relative;
  justify-content: center;
  display: inline-flex;
  align-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: #fff;
  border: 1px solid #eee;
  text-align: center;
  color: #000;
  font-size: 16px;
}

.left .l-top {
  display: flex;
  justify-content: space-around;
  padding: 16px 0px;
  border: 1px solid #eee;
  border-radius: 4px;
  margin-bottom: 10px;
  background-color: #fff;
}

.left {
  width: 260px;
  height: 100%;
  margin: 10px 10px 0px 10px;
}

.left .l-top li:nth-child(2) a {
  border: 1px solid #eee;
}

.left .l-top li:nth-child(3) a {
  background-color: #5188b8;
  border: none;
}

.left .l-top li:nth-child(4) a {
  position: relative;
  border: 1px solid #eee;
}

.left .l-top li:nth-child(4) a::before {
  width: 4px;
  height: 4px;
  content: " ";
  position: absolute;
  background-color: red;
  border-radius: 50%;
  top: 0px;
  left: 16px;
}

.left .l-top li {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.left .l-top li a {
  display: inline-block;
  padding: 10px;
  border-radius: 50%;
  background-color: #fff;
  border: 1px solid #FF90AA;
}

#answer .top {
  background-color: rgb(39, 118, 223);
}

#answer .item {
  color: #fff;
  display: flex;
  padding: 20px;
  font-size: 20px;
}

#answer .top .item li:nth-child(1) {
  margin-right: 10px;
}

#answer .top .item li:nth-child(3) {
  position: relative;
  margin-left: auto;
}

#answer {
  padding-bottom: 30px;
}

.icon20 {
  font-size: 20px;
  font-weight: bold;
}

.item .msg {
  padding: 10px 15px;
  border-radius: 4px;
  top: 47px;
  right: -30px;
  color: #6c757d;
  position: absolute;
  border: 1px solid rgba(0, 0, 0, .15);
  background-color: #fff;
}

.item .msg p {
  font-size: 16px;
  width: 200px;
  text-align: left;
}
</style>
